How much RAM is needed for a SaaS

I got a dedicated server at Hetzner at the moment and I think about moving to DO. But I am hesitant right now. The dedicated server I got there has 24GB of RAM available to me for almost the same price as the 20$ offer at DO with 2GB RAM. I am really not sure where the advantage of moving to DO is. Or does the RAM not matter that much?

RAM does make a difference but without information on your services and what level of load they are putting on your current server there is no easy way to estimate your needs. Can you share a link to the plan you are referring to that offers 24GB of RAM @ around $20/mo